Muscles, Joints, And All That Jazz

Question 1

What are bones held together by?

Answer 1

Ligaments

Question 2

What allows the skeleton to pivot and move (not muscles)

Answer 2

Joints

Question 3

What is the most common type of joint, and how does it work?

Answer 3

Synovial joint, it is freely movable and has spongy cartilage between the bones as a shock absorber, is well lubricated by synovial membrane for smooth movement

Question 4

What are the three kinds of synovial joints?

Answer 4

Hinge (movement in one direction), Pivot (rotating or twisting movement), and Ball and Socket joint (greatest movement, bone fits into socket and allows lots of movement).

Question 5

What are muscles made of?

Answer 5

Interlocking fibres, made from myofibril. Built stronger by protein and exercise (breaking down of muscle and building back up).

Question 6

What are the three types of muscle cells?

Answer 6

Smooth (eye, intestines), Cardiac (moves blood and maintains blood pressure) , Skeletal (move or stabilise the position if the skeleton)

Question 7

Generally, in what groups do muscles come in

Answer 7

Pairs, and they work antagonistically (opposite to each other). One contracts while the other relaxes in order to move a part of the body.

Question 8

Name some major muscles pairs in the human body.

Answer 8

Bicep and Tricep, Pectoral and Shoulder, Quadriceps and Hamstrings, Calf and Shin.